/* ============ Design tokens (brand: 3A Bodenbeläge) ============ */
:root {
  --color-primary: #f1491c;
  --color-primary-dark: #cf3712;
  --color-primary-darker: #a52c0d;
  --color-primary-tint: #fdece5;

  --color-ink: #1e1a18;
  --color-text: #2b2624;
  --color-text-muted: #6b6462;
  --color-border: #e5e1de;

  --color-grey: #b2b1b1;
  --color-grey-dark: #706e6e;
  --color-grey-100: #f5f4f3;
  --color-grey-200: #ececea;

  --color-bg: #ffffff;
  --color-bg-alt: #f7f6f5;
  --color-surface: #ffffff;

  --font-display: 'Space Grotesk', 'Inter', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 12px rgba(30, 26, 24, 0.07);
  --shadow-md: 0 16px 40px rgba(30, 26, 24, 0.14);
  --container-w: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--color-ink);
}
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; color: var(--color-text-muted); }
ul { padding: 0; margin: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.container.narrow { max-width: 760px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 8px 0;
  z-index: 1000;
}
.skip-link:focus { left: 0; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.55);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-dark {
  background: var(--color-ink);
  color: #fff;
}
.btn-dark:hover { background: #000; transform: translateY(-2px); }
.btn-block { width: 100%; justify-content: center; }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled { border-color: var(--color-border); box-shadow: var(--shadow-sm); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; min-width: 0; }
.logo img { height: 34px; width: auto; max-width: 100%; }
.logo-icon-img { display: none; }
@media (max-width: 560px) {
  .logo img { height: 26px; }
}
@media (max-width: 400px) {
  .logo img { height: 22px; }
}

.main-nav ul { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 10px 14px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
  display: inline-block;
}
.main-nav a:hover { background: var(--color-grey-100); }
.main-nav li.active > a { color: var(--color-primary); }
.main-nav a.nav-cta {
  background: var(--color-primary);
  color: #fff;
  padding: 10px 22px;
}
.main-nav a.nav-cta:hover { background: var(--color-primary-dark); }

.nav-dropdown { position: relative; }
.nav-dropdown-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px;
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-panel a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.nav-dropdown-panel a:hover { background: var(--color-grey-100); color: var(--color-primary); }

.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-grey-100);
  color: var(--color-primary);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}
.icon-link:hover { background: var(--color-primary); color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Page hero (photo background) ============ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 90px;
  color: #fff;
  background-color: var(--color-ink);
  background-size: cover;
  background-position: center;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(20,16,14,0.88) 0%, rgba(20,16,14,0.55) 55%, rgba(241,73,28,0.35) 100%);
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 760px; }
.hero.hero-sm { padding: 84px 0 64px; }
.hero.hero-sm .hero-inner { max-width: 680px; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}
.hero .eyebrow { color: #ffb59c; }
.hero h1 { color: #fff; margin-bottom: 18px; }
.hero-lead { font-size: 1.12rem; color: rgba(255,255,255,0.88); max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin: 30px 0 0; }

.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; margin: 48px 0 0; position: relative; z-index: 1; }
.hero-stats > div { display: flex; flex-direction: column; }
.hero-stats dt { font-family: var(--font-display); font-size: 2.1rem; font-weight: 700; color: #fff; }
.hero-stats dd { margin: 0; font-size: 0.86rem; color: rgba(255,255,255,0.75); max-width: 170px; }

.breadcrumb {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 18px;
}
.breadcrumb a { text-decoration: none; color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: #fff; }

/* ============ Sections ============ */
.section { padding: 96px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-sm { padding: 64px 0; }
.section-lead { max-width: 640px; font-size: 1.06rem; }
.fine-note { max-width: 640px; font-size: 0.9rem; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: start;
}

.check-list { margin-top: 20px; }
.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  color: var(--color-text);
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size: 11px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ============ Cards / Grids ============ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.service-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.service-card h3 { margin-bottom: 8px; }
.service-card p { margin: 0; font-size: 0.95rem; }
.service-card a.card-link { font-weight: 600; color: var(--color-primary); text-decoration: none; font-size: 0.88rem; display: inline-flex; align-items: center; gap: 6px; margin-top: 6px; }

.showroom-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px;
}
.showroom-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-primary);
  font-weight: 600;
}
.showroom-card:last-of-type { border-bottom: none; }
.showroom-note { margin-top: 18px; font-size: 0.88rem; }

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.advantage { text-align: left; }
.advantage-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.advantage h3 { font-size: 1.05rem; margin-bottom: 6px; }
.advantage p { font-size: 0.92rem; margin: 0; }

.lifespan-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.lifespan-card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-darker));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.lifespan-number { font-family: var(--font-display); font-size: 3rem; font-weight: 700; }
.lifespan-label { font-size: 0.95rem; color: rgba(255,255,255,0.9); }

/* ============ Patterns / process ============ */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.pattern-card { margin: 0; text-align: center; }
.pattern-swatch {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
}
.pattern-card figcaption { font-size: 0.88rem; font-weight: 600; color: var(--color-ink); }

.pattern-herringbone {
  background-color: #ded9d5;
  background-image:
    repeating-linear-gradient(45deg, var(--color-grey) 0 6px, transparent 6px 12px),
    repeating-linear-gradient(-45deg, var(--color-grey) 0 6px, transparent 6px 12px);
  background-size: 32px 32px;
}
.pattern-chevron {
  background-color: #ded9d5;
  background-image: repeating-linear-gradient(135deg, var(--color-grey) 0 14px, #cac8c7 14px 28px);
}
.pattern-plank {
  background-color: #cac8c7;
  background-image: repeating-linear-gradient(0deg, var(--color-grey) 0 3px, transparent 3px 34px);
}
.pattern-basket {
  background-color: #ded9d5;
  background-image:
    repeating-linear-gradient(90deg, var(--color-grey) 0 16px, transparent 16px 32px),
    repeating-linear-gradient(0deg, var(--color-grey) 0 16px, transparent 16px 32px);
  background-size: 32px 32px;
  background-position: 0 0, 16px 16px;
}
.pattern-ship {
  background-color: #cac8c7;
  background-image: repeating-linear-gradient(3deg, var(--color-grey) 0 5px, transparent 5px 30px);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.process-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}
.process-card img { aspect-ratio: 4/3; object-fit: cover; }
.process-card .process-body { padding: 20px; }
.process-card h3 { font-size: 1rem; margin-bottom: 6px; }
.process-card p { font-size: 0.88rem; margin: 0; }

.reference-note {
  margin-top: 56px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.reference-note p { margin: 0; max-width: 560px; }

/* ============ Compare / chips ============ */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.compare-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
  background: var(--color-surface);
}
.compare-card li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text);
}
.compare-card li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.chip-row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.chip {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--color-grey-100);
  color: var(--color-ink);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
}
.chip-primary { background: var(--color-primary-tint); color: var(--color-primary-dark); border-color: transparent; }

/* ============ Timeline ============ */
.timeline { margin-top: 48px; display: flex; flex-direction: column; gap: 0; }
.timeline-item { display: flex; gap: 22px; padding-bottom: 36px; position: relative; }
.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 19px; top: 40px; bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-dot {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-family: var(--font-display);
}
.timeline-item h3 { margin-bottom: 4px; }
.timeline-item p { margin: 0; }

/* ============ Accordion ============ */
.accordion { margin-top: 40px; display: flex; flex-direction: column; gap: 12px; }
.accordion details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 22px;
}
.accordion summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
  color: var(--color-ink);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.accordion details[open] summary::after { transform: rotate(45deg); }
.accordion details p { padding-bottom: 18px; margin: 0; }
.accordion-section-title { margin-top: 40px; margin-bottom: -6px; font-size: 1rem; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; }

/* ============ City chips ============ */
.city-grid { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.city-chip {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}
.city-chip-main {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 700;
}

/* ============ Project / gallery cards ============ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.project-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.project-card .project-img { aspect-ratio: 4/3; overflow: hidden; background: var(--color-grey-100); }
.project-card .project-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.project-card:hover .project-img img { transform: scale(1.06); }
.project-card .project-body { padding: 20px; }
.project-card .project-loc { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-primary); font-weight: 700; margin-bottom: 6px; }
.project-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.project-card .project-sub { font-size: 0.88rem; color: var(--color-text-muted); margin: 0; }

.project-detail {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 28px;
}
.project-detail .project-detail-img { height: 100%; min-height: 280px; overflow: hidden; }
.project-detail .project-detail-img img { width: 100%; height: 100%; object-fit: cover; }
.project-detail .project-detail-body { padding: 32px; }
.project-detail .project-loc { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-primary); font-weight: 700; margin-bottom: 8px; }
.project-detail h3 { margin-bottom: 4px; }
.project-detail .project-sub { color: var(--color-text-muted); font-weight: 500; margin-bottom: 14px; }
.detail-table { margin-top: 16px; font-size: 0.88rem; }
.detail-table tr { border-top: 1px solid var(--color-border); }
.detail-table td { padding: 10px 0; color: var(--color-text); }

.project-category-head { margin-top: 72px; margin-bottom: -12px; }
.project-category-head:first-of-type { margin-top: 0; }

/* ============ Gallery trigger / thumbs / lightbox ============ */
.gallery-open {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: zoom-in;
  background: none;
  position: relative;
}
.gallery-open img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-badge {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(20, 16, 14, 0.72);
  backdrop-filter: blur(3px);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 7px 13px;
  border-radius: 999px;
}

.gallery-thumbs { display: flex; gap: 8px; margin-top: 18px; flex-wrap: wrap; }
.gallery-thumb {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  padding: 0;
  cursor: pointer;
  position: relative;
  background: var(--color-grey-100);
  flex-shrink: 0;
}
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-thumb:hover { border-color: var(--color-primary); }
.gallery-thumb-more::after {
  content: attr(data-more);
  position: absolute;
  inset: 0;
  background: rgba(20, 16, 14, 0.62);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(10, 8, 7, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox-stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 88px;
}
.lightbox-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 3px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
}
.lightbox-btn {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s ease;
}
.lightbox-btn:hover { background: rgba(255, 255, 255, 0.22); }
.lightbox-close { top: 20px; right: 20px; }
.lightbox-prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.85rem;
  font-weight: 600;
}
.lightbox-caption {
  position: absolute;
  bottom: 52px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 80%;
  text-align: center;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  .lightbox-stage { padding: 60px 16px; }
  .lightbox-prev { left: 4px; }
  .lightbox-next { right: 4px; }
  .lightbox-btn { width: 40px; height: 40px; }
}

/* ============ Wood species grid ============ */
.wood-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.wood-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}
.wood-card .wood-img { aspect-ratio: 16/10; overflow: hidden; }
.wood-card .wood-img img { width: 100%; height: 100%; object-fit: cover; }
.wood-card .wood-body { padding: 22px; }
.wood-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.wood-card p { font-size: 0.9rem; margin-bottom: 10px; }
.wood-sort { display: flex; flex-wrap: wrap; gap: 6px; }
.wood-sort span {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--color-grey-100);
  color: var(--color-grey-dark);
}

/* ============ Contact ============ */
.contact-info { margin-top: 28px; display: flex; flex-direction: column; gap: 4px; }
.contact-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
}
.contact-row svg { color: var(--color-primary); flex-shrink: 0; }
.contact-row:last-child { border-bottom: none; }
a.contact-row:hover { color: var(--color-primary); }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}
.contact-form h3 { margin-bottom: 20px; }
.form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 0.88rem; font-weight: 600; color: var(--color-ink); }
.form-row input, .form-row textarea {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--color-bg);
  color: var(--color-text);
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.form-note { font-size: 0.8rem; text-align: center; margin: 14px 0 0; }

.map-frame {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 360px;
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }

/* ============ Footer ============ */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.75);
  padding-top: 64px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand img { height: 30px; margin-bottom: 12px; }
.footer-brand p { margin-top: 10px; font-size: 0.9rem; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav-title { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(255,255,255,0.4); margin-bottom: 4px; font-weight: 700; }
.footer-nav a { text-decoration: none; font-size: 0.92rem; color: rgba(255,255,255,0.75); }
.footer-nav a:hover { color: #fff; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 0.92rem; }
.footer-contact a { text-decoration: none; color: rgba(255,255,255,0.75); }
.footer-contact a:hover { color: #fff; }
.footer-bottom {
  padding: 22px 24px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============ Back to top ============ */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s ease;
  z-index: 400;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: block;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }
  .main-nav.open ul { flex-direction: column; align-items: stretch; padding: 16px 20px 24px; gap: 4px; }
  .main-nav.open a { display: block; padding: 12px 14px; }
  .nav-dropdown-panel {
    position: static;
    opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; background: var(--color-grey-100);
    margin: 4px 0 4px 12px;
    display: none;
  }
  .nav-dropdown.dropdown-open .nav-dropdown-panel { display: block; }
  .card-grid, .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .pattern-grid, .process-grid { grid-template-columns: repeat(3, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .wood-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .project-detail { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .hero { padding: 84px 0 56px; }
  .card-grid, .card-grid.cols-2, .card-grid.cols-4, .advantage-grid, .compare-grid, .lifespan-grid, .process-grid { grid-template-columns: 1fr; }
  .pattern-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid, .wood-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-stats { gap: 26px; }
  .reference-note { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; }
}

/* ============ Password gate ============ */
.pw-gate {
  position: fixed;
  inset: 0;
  z-index: 5000;
  background:
    linear-gradient(135deg, rgba(20,16,14,0.92), rgba(30,22,18,0.96)),
    repeating-linear-gradient(100deg, #8a5a3b 0 90px, #6b4128 90px 180px, #96633f 180px 270px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.pw-gate.unlocked { display: none; }
.pw-gate-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  max-width: 380px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.pw-gate-logo { height: 32px; width: auto; margin: 0 auto 26px; display: block; }
.pw-gate-card h1 { font-size: 1.35rem; margin-bottom: 8px; }
.pw-gate-card p { font-size: 0.92rem; margin-bottom: 22px; }
.pw-gate-card form { display: flex; flex-direction: column; gap: 14px; }
.pw-gate-card input {
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  font-size: 0.95rem;
  text-align: center;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
}
.pw-gate-card input:focus { outline: none; border-color: var(--color-primary); }
.pw-gate-error {
  color: var(--color-primary);
  font-size: 0.85rem;
  margin: 0;
  font-weight: 600;
}
body.gate-active { overflow: hidden; }